I was going to start going primal with the challenge today, but I couldn't wait, so I started last Thursday. I've done similar things before, and had good success (with the exception of sticking with it for more than a year), so I'm excited.
Today I forgot to bring my lunch to work (doh) so I went out to eat, and chose as primal as I could - a Caesar salad with smoked wild salmon.
Since I've had no sugar for the past 4 days, I've become very sensitive to it. Sweet onions in a scramble yesterday tasted like candy to me - delicious. Today, though, my salad made me jittery, so I suspect there was corn syrup or something else evil in the dressing. Live and learn!
One major take-away I've gotten from the Primal Blueprint (I'm half way through the book) and also the book "In Defense of Food" is the difference between FOOD and NOT FOOD. My coworker ordered a sandwich and fries, and I noticed that most everything on his plate was NOT FOOD. Breaded, fried potatoes are NOT FOOD. That huge bun was NOT FOOD. The tortilla chips (it was a Mexican restaurant) were NOT FOOD. The only actual food on his plate was some meat inside the sandwich, and there wasn't much of it. So the moral of this story is that I'm noticing what is FOOD and what is NOT FOOD, and that very much helps me to choose the FOOD.